This low cost Receive Only 70cm 430MHz Preamplifier has been designed to be easy to construct and can be center frequency tuned for use between 350 and 500MHz, and is suitable for the 430 to 450MHz amateur band. This Preamplifier has the option of being powered via the coaxial cable, and is very suitable for retrofitting inside older transceivers to improve the weak signal gain. A low cost BF998 MesFET has been used as it has very good characteristics on the VHF to UHF bands. The BF988 was specifically designed for television tuners and has a low <1dB NF @ 800MHz, along with high cross modulation performance.

The Product image shows a fully constructed EME173-70CM B1 product.  Please refer to the Options Tab for the descriptions of the various products available.

Please Note: Built products usually need to be constructed and can take up to 2 weeks to ship depending on work load, but are normally shipped in few days.

EME173-70CM KIT is a Basic Kit that includes the PC board, Instructions, and all on board components.  No connectors or enclosure are included. Requires Complete construction and fitting of three SMD components.

EME173-70CM B1  Is a fully constructed board Kit with female SMA connectors.  This product cannot be mounted into a Hammond 1590A enclosure.

EME173-70CM B2  Is a fully constructed product in a Hammond 1590A enclosure with female SMA connectors and 2.1mm DC Socket.

EME173-70CM B3  Is a fully constructed product in a Hammond 1590AFL enclosure with female SMA connectors and 2.1mm DC socket.

EME173-70CM PCB Only includes the PC board and Kit construction notes. No on board Components are included.

EME173 Enclosure Kits include all the hardware to mount a EME173-70CM KIT into an enclosure.

Basic Kits Do Not include connectors, miscellaneous hardware, or enclosure. The 2.1mm DC cable is optional and not supplied with Products.  Ideal for beginner to average constructor.

Tunable Frequency Range:
380 to 500MHz maximum
Gain: Typically +18dB @ 435MHz
3dB Bandwidth: >60MHz
Noise Figure:
1.5dB ( Typically < 1.15dB @ 435MHz )
Operating Voltage: +10 to 15vdc ( +12vdc @ 10mA Recommended )
Board Size: 71mm L x 32mm W x 15mm H ( without connectors or enclosure )

For more information see the EME173-Rev2 KIT WEBPAGE

70cm 430MHz Receive Only Preamplifier

  • Brand: Mini-Kits
  • Product Code: EME173-70CM KIT
  • Quantity In stock: 10
  • $27.90

Available Options


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EME173 1590A Enclosure Kit
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